Jar-closure



No. masso'.

G. w. 'BURKHARL JAR CLDSURE. (Application med Apr. 1s, 139s.)

Patentg'd l'ni' 3, 1899.

, IINTTED STATES PATENT OFFICE.

GEORGE W". BURKHART, OF DETROIT, MICHIGAN.

JAR-CLOSURE.

sEcIFIcATIoN forming par: of Letters Patent ivo. 616,890, dated Januarys, 189e. Appnmnmiednprn13,1898. Santino. 6771401. (No mean.)

To a/ZZ whom, it may concern/.-

Be it known thatI, GEORGE W. BUEKHART, a citizen of the United States,residing at Detroit, in the county of Wayne and State of Michigan, haveinvented certain new and useful Improvements in Jar-Closures, of whichthe following is a specification, reference being had therein to theaccompanying drawings.

The invention consists in a j ar-closure, and particularly in theconstruction of a clampingband adapted to be contracted upon the coverand jar, which latter are provided with oppositely-tapering faces andthe band being provided with corresponding faces, so that when it iscontracted it will draw the cover onto the top of the jar and make atight joint.

The invention consists in the construction of this band of a singlepiece of sheet metal with overlapping ends, which ends are connected bya link, the parts being constructed and operating in the mannerhereinafter set forth.

In the drawings, Figure l is a perspective view of the top of a jar,showing my invention applied thereto. Fig. 2 is a top plan view of myclampingband, showing it open. Fig. 3 is a perspective view of the link.e Fig. lis a vertical section through onerside of the jar and cover,illustrating its construction.

A represents an ordinary fruit-jar, of which B is the cover, fittedthereon, preferably outside of a ange C on the jar, which represents thebust-off flange of the jar in manufacturing the cover, being providedwith a downwardly-extending Iiange D at its rear edge,which rests on apacking E on the shoulder F around the outer face of the top of the jar. The under side of this shoulder is formed by the bevel-face G, andthe top is provided with an oppositelybeveled face H, against which thelips I, on opposite edges of the clamping-band J, engage. It is obviousthat the contracting of the band about the top will draw the covertightly upon the packing-ring E. This part of the structure I do notclaim, as my invention relates solely to the construction ofthe banditself. Heretofore in the manufacture of such devices it has been foundnecessary to use a lever which was connected at one end of the band andthe fulcrum of which was connected to the other end of the band.

This necessitates a lever of some considerable length and necessitatesconsiderable thickness of the band at the point where the lever isattached and adds considerably to the expense of the device. Vith myinvention I form the tongue K at the outer end of the band and form abearing therein for one end of the link L by simply bending the end ofthe tongue around the ends of the link, which, as shown in Fig. 3, isU-shaped. This saves any riveting at this point, as would be necessaryin putting afulcrurnV-point in for the 1ever, as heretofore. lI provideon the inner end of the band theapertured ears M, and I provide on theinner end of the link the outwardly-extending pins O. These pins may be'engaged with the apertures in the ears M by pressing the two sides ofthe link together, then inserting the end between the ears, and

allowing the legs to separate by the tension of the spring-link andenter the apertures, as shown in Figs. l and 2. Thus I am enabled notonly to dispensewith the long lever formerly required, but also todispense with an-y riveting or similar labor in getting the partstogether, thereby greatly reducing the expense of manufacture andsimplifying the device. The parts being thus constructed, the band isopened, as shown in Fig. 2, engaged over the cover, and then theoperator presses on the outer end of the link and forces it'intoparallelism with the side of the can, as shown in Fig. 1, thereby movingthe link beyond the central line of strain between the pivotal pointsthereof and locking it in position in the well-known manner. To effectthis, I usually find it necessary to curve the link slightly to conformto the sideof the Jar.

Vhat I claim as my invention isl. In a jar-closure, the combination withthe jar and its cap having bearing-faces for the clamping-ring, of theclamping-ring made of sheet metal with overlapping ends and a linkconnected at its opposite ends directly to the opposite ends of theclamping-band.

2. In a jar-closure, of the kind described, the clam ping-band formed ofsheet metal with overlapping ends, a link having its opposite endsconnected directly to the ends of the band, such connection being formedat one end by bending a hook in the band and at IOO parts being arrangedsubstantially as shown y and described.

4. The Combination with a jar and cap having bearing-faces for aclamping-ring, of a 15` elampingring of sheet metal having inwardlybentlips I and outwardly-bent apertured ears and a tongue provided at itsend with a hook, and a Wire link held at one end by said hook on thetongue and at the other end by zo said apertured ears.

In testimony whereof I aflix my signature in presence of two Witnesses.

GERGE XV. BURKIART.

Witnesses: u

-M. B. ODOGHERTY, OTTO F. BARTHEL.

